Timothy G. Casey is charged with manufacturing drugs on his Burbank property.

WALLA WALLA -- Formal charges were filed Wednesday afternoon in Superior Court against a Burbank man suspected of growing marijuana on his property.

Timothy G. Casey, 51, of 425 E. Sunset Drive, is accused of manufacturing marijuana within 1,000 feet of a school bus route stop and while armed with a firearm. He also faces a charge of possessing the controlled substance with the intent to deliver it.

Casey was arrested Friday after officials served a search warrant at his residence, but was released Saturday after $25,000 cash bail was posted.

He's being summoned to court Monday for his arraignment and plea.

Thirty-nine suspected marijuana plants were located in a metal shop in the back of Casey's property, according to a Sheriff's Office report filed in court. The shop contained two grow rooms, one of which was behind a hidden wall and another that was under the floor, officials said.

A medical marijuana permit was displayed on a wall, but not more than 15 plants are allowed by law.

Authorities also located a processing, packing and resale room in another metal building on the property, the report says. Among items allegedly discovered were about five ounces of marijuana, a drying rack, scales and hundreds of various-sized plastic packaging bags.

Officials obtained the search warrant after receiving information that Casey "had been moving pounds of marijuana for at least the last 16 months," according to the Sheriff's Office report.

During the search at the residence, authorities also found "a handful of firearms," including two loaded handguns in the processing/packaging/resale room, the report says.